Who can solve the following questions?

Hi,everyone!There are some questions i really want to know and discuss.Anyone interests it can join in lol
1、Which two words starting with "P" and "O" contain the most letters?
2、What is at:The beginnig of eternity
The end of time and space
The beginning of every end
And the end of every place

Longest word start with "P" would be Pneumtramonoulicroscopicsilicovolcanoconiosis .
It has 40 letters.


You got me on the rest.

What is the meaning of "Pneumtramonoulicroscopicsilicovolcanoconiosis"?It should be a meaningful word lol.